The 20C Sodium 3V 18650 1300mAh Na Sodium Cylindrical Battery Cell is a high-rate sodium-ion cell designed for demanding applications requiring rapid discharge capability and reliable performance across a wide temperature range. With a nominal voltage of 3.1V and a rated capacity of 1300mAh, this cell delivers consistent power output even in extreme cold conditions.
| Item | Parameters | Remark |
|---|---|---|
| Rated Capacity | 1300mAh | — |
| Nominal Voltage | 3.1V | — |
| Internal Impedance | ≤20mΩ | Internal resistance measured at AC 1kHz after 50% charged. |
| Standard Charge Cut-off Voltage | 3.95V | — |
| Standard Discharge Cut-off Voltage | 1.8V | — |
| Maximum Continuous Discharge Current | 20C | — |
| Peak Discharge Current | 30C | — |
| Cycles | 1000 times | — |
| Size | 18 * 65mm | — |
| Weight | 37g | — |
Sodium-ion chemistry delivers superior capacity retention at low temperatures. This cell achieves 90% discharge capacity at −20°C, whereas comparable LFP (lithium iron phosphate) cells retain only 60%–70% under the same conditions.